class_docstr: Test that the pipeline can be run on literal datasets.
code: def _help(self, model):
      rv = pipeline(
          dataset=NationsLiteral,
          model=model,
          training_kwargs=dict(num_epochs=5, use_tqdm=False),
          evaluation_kwargs=dict(use_tqdm=False),
          training_loop="lcwa",
      )
      self.assertIsNotNone(rv)
      with tempfile.TemporaryDirectory() as d:
          rv.save_to_directory(d)
  
file_path: pykeen/tests/test_multimodal.py
imports: import tempfile
  import unittest
  from pykeen.datasets.nations import NationsLiteral
  from pykeen.models import ComplExLiteral, DistMultLiteral
  from pykeen.pipeline import pipeline
label_desc: Use image node_id 1 for calling the TestLiteralModel obj's underlying member method code with example usage: obj._help(model) without return types